Insulated tank



Get. lq 1929. H. B. LINDSAY l $130,153

` INSULATED TANK4 Filed Dc. 1.6. 1927 z sheets-sheet z Patented @et il, 1929 narran' strates narrar cierra HARVEY B. LJINDSAY, @F EVNSTON, ILLINOIS?, ASSL'GNOR TO DRY ZERO) CORPORA= TIQN, 0F WILMINGTON, DELAWARE, A CORPORATION 0F DELAWARE XNSULATED TANK Application filed December 16, 192'?. Serial No. 240,451.

lr/ly invention relates, more particularly, to tanks comprising a tank proper surrounded by a shell spaced therefrom, with insulating material `interposed .between these parts.

@ne of my objects is to provide supporting means for the shell whereby the passage of heat from the shell to the tank, or vice Versa, as the case may be, by conduction, will be reduced to the minimum.

Another` object isto provide a highly efficient construction of shell-supporting means.

Another object is to provide for the proper supporting of the shell where relatively soft yielding insulating material is used and to provide, in this connection, for the maximum insulating effect by such insulating material.

Another object is to provide simple and economical means for effectively insulating the tank, especially where soft insulating material is used and requiring the minimum of labor for assembly of the parts of the structure; and other objects as will be manifest from the following description.

Referring to the accompanying drawings Figure 1 is a View in elevation, with certain parts thereof shown in section and others in side elevation of a tank structure constructed in accordance with my invention, certain portions of the structure being broken away at dierent points along the tank structure. Figurel 2 is an end view of the tank structure, the end dome plate of the shell being shown 'F in section and the insulating material for the end of the shell omitted. Figure 3 is an enlarged broken section taken at the line 3 on Fig. 1 and viewed in the direction of the \arrow. Figure 4 is asimilar View taken at the line 4 on Fig. 3 and viewed in the direction of the arrow; and Figure 5, a view like Fig. 4, of a modification of the means shown therein.

1n the particular construction shown the tank proper is represented at 6 and may be vof any desirable construction, and the shell for surrounding the tank in spaced relation thereto is represented at 7, the space between thetank proper and the shell being provided to receive the material for insulating the tank proper 6.

lin the arrangement'shown the tank proper 6 is encircled, lat intervals along its length, by bands 8 each of which is shownl as containing at one end a transversely disposed slot 9 into which its opposite end is inserted and turned back to buckle the band 8 to the tank proper. Each' band 8 is equipped with a series of blocks 10 which may be, and preferably are, of wood. Extending across each end of the tank proper 6 at its outer surface are a plurality of strips 11 shown as fastened at their opposite ends to adjacent ones of the tank encircling blocks 10, the strips 11 being equipped with blocks 12 arranged in spaced relation and similar to the blocks 10.

The material for insulating the tank proper 6 and which is located in the space between the tank proper and the shell 7 is represented at-13, and is shown as entirely surrounding and enclosing the block-'equipped tank proper 6. The insulating material 13, as shown, and by preference, is of relatively soft character, as for example and preferably, kapok fiber With the fibers referably extending in substantially parallel relation to each other.

Encircling the series of blocks 10, according to the showing in Figs. 1, 2, 3 and 4,`

are bands 14 which may be, and preferably are, of wood between which and the blocks the interposed portions of the insulating material 13 are compressed, these bands being secured to the blocks as by screws 15vas represented in Figs. 3 and 4. Extending across the series of blocks 12, with the insulating material interposed therebetween, is a series of strips .16 like the bands 14 and secured to the blocks 12 as described of the bands 14.

rllhe shell 7 is shown as secured at intervals to the bands 14 and strips 16,'as by means of screws 17 passing through the shell and screwing into these bands and strips. K"

rlihe construction shown in Fig. 5 is the same as that of the preceding figures except that the band members between which and the blocks, the insulating materialextends are of channel form as shown at 18 instead of the form shown in the preceding figures which is especially desirable where it is desired that these band members be of metal, in which case the' shell 7 may be secured to the members 18 in any suitable way, as for example by welding.

In assembling the parts of the structure it is preferred that they be assembled as folbands into tight engagement with the tank the free ends are bent back upon themselves to the position shown. The lnsulating material 13 preferably in the form of a blanket, is then applied to the exterior of the tank to cover t-he blocks 10. The bands 14 are then applied to a position in which they encircle the blocks 10, with the insulation therebetween and then secured to these blocks as in the manner above described, the insulating material between these opposing members becoming compressed. The shell 7 is then applied tothe bands 14, and secured to these bandsas above described. Where the shell 7 is to be welded to the structure which it surn rounds, the bands 14 would be positioned so that the joints between the sections forming the shell 7 would register with these bands, and in t-he welding of the joints the metal at these oints would be welded to the bands.

The block-equipped strips 11 are applied to the ends vof the tank as shown, the insulating material is then a plied to cover the ends of the tank and t e block-equipped strips, whereupon the members 16 are applied to the position shown and secured to the blocks 12, the insulating material between .these opposing parts becoming compacted. The heads of the she1l7 are then applied to the position shown and secured to the circumferential side Wall of the shell. It will be understood from the foregoing that by providing the series of blocks spaced apart, as distinguished from providing band structures of uniform thickness throughout/ their extent, the transmission of heat through the structure is minimized.' t

Furthermore, by constructing the insulated tank in accordance with my invention, the

shell therefor and between which and the tank the insulating material is interposed, is rigidly supported, even though the insulating material be relatively soft and fluffy as in the case of the material suggested above, and the maximum insulatin effect produced.

Further, the nature o? my invention is such that 'the insulating material can be applied in lar e blankets or sheets as described (nalthoug not necessarily so thereby reducing the cost of application o insulation and at the same time breaking the heat conductivity even through blocks to the outer shell.

fulfilling the erent The structure rovided also lends itself to While I have illustrated and described certain particular embodiments of my invention, I do not wish to be understood as intending to limit it thereto as various alterations and modifications may be made in the structure shown and the invention embodied in other forms, without departing from the spirit of my invention.

What I claim as new, and desire to secure by Letters Patent, is: p

1. In an insulated tank structure, the combination of a tank to be insulated, an outer shell for said tank in spaced relation to said tank, spacing members between said tank and shell and secured to said tankand each presenting a seriesv of outwardly extending shell-supporting spaced apart portions, means for securing said members to said shell to prevent displacement of said shell and members relative to each other longitudinally of said tank structure, and insulatingmaterial in the space between said tank and shella 2. In an insulated tank structure, the combination of a tank to be insulated, an outer shell/for said tank in spaced relation to said tank, spacing members between said tank and shell and secured to said tank and each presenting a serie-s of outwardly extending shellsupporting spaced apart portions, means for securing said members to said shell to prevent displacement of said shell and members .relative to each other longitudinally of said y,tank structure, and insulating material in the space between said tank and shell e-xtending over said spacing members.

3. In an insulated tank structure, the com-4 bination of a tank to be insulated, an outer shell for said tank in spaced relation to said tank, spacing means between said tank andshell and secured to said tank and presentingV interrupted outwardly projecting shell-supi porting portions and strip-members extending across and secured yto said shell-supporting portions and to said shell, and insulating material inthe space between said tank and shell.

bination of a tank to be insulated, an outer 4. In anA insulated tank structure, the comshell for said tank in spaced relation to said tank, spacing members between saidtank and shell and secured to said tank and each presenting a series of outwardly-extending shellsupporting spaced-apart portions, strip-members extending across said series of shell-supporting portions and secured to the latter and to said shell, and insulating material in the s ace between said tanll' m d shellu an insulated tank. et the eambination of a tank to be insulated, an outer shell for said tank in spaced relation to said tank, spacing means between said tank and -shell presenting vinterrupted outwardly 'projeeting shell-supporting portions and members opposing, and secured to, said shell-supporting portions, and insulating material located inthe space between said tank and shell and between said shell-supporting portions and said members.

6. In an insulated tank structure, the combination of a tank to be insulated, an outer shell for said tank in spaced relation to said tank, spacing means between said tank and shell presenting interrupted outwardly projecting shell-supporting portions and stripmembers extending across and secured'to said shell-supporting portions, and insulating material in the space between said tank and shell and interposed between said shell-supporting portions and said strip-members.

7. In an insulated tank structure, the combination of a tank to be insulated, an outer shell for said tank in spaced relation to saidI tank, spacing members betweensaid tank and shell comprising bands surrounding said tank and provided with blocks projecting radially outward therefrom, insulating material surrounding said tank and extending over said blocks, and bands extending around said tank and over said blocks and the insulation thereon and`secured to said blocks.

8. In an insulated tank structure, the combinatiorr of a tank to be insulated, an outer shell for said tank in spaced relation thereto', bands surrounding said tank and carrying f circumferentially separate radially projecting supporting members, said bands having means for adjusting them tightly around sald tank, insulating material surrounding said' tank and extending over said blocks, and bands extending around said tank and over said blocks and the insulation thereon and secured to said blocks.

HARVEY B. LINDSAY. 

